GO-2026-4918

    Dashboard / Vulnerabilities / GO-2026-4918

    GO-2026-4918

    Published: 7 May 2026Last Modified: 9 Sept 2026

    Summary: Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net

    Details: When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

    References: https://go.dev/cl/761581, https://go.dev/cl/761640, https://go.dev/issue/78476, https://groups.google.com/g/golang-announce/c/qcCIEXso47M

    Affected packages

    Package

    Name: golang.org/x/net

    Purl: pkg:golang/golang.org/x/net

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -0.53.0

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High